FACT: CO2 concentration has RAPIDLY increased, and this increase correlates to human activity- ie deforestation and fossil fuel burning:
The following data is from Vostok Ice core samples, and is confirmed by other ice core data and other independent methods:

True. I agree completely.

This increase CANNOT be explained by volcanism- the isotopic ratio of carbon in the atmosphere show a similar sudden and escalating change- this change is consistent with what you would expect if this additional carbon was coming from fossil fuel burning. This change is the OPPOSITE of what you would expect from volcanism.
What you say is true, CO2 increase is from deforestation and fossil fuel burning.

What you say about isotopes is wrong. Deforestation puts fresh (high C14) carbon compounds into the atmosphere. Volcanism and fossil fuel burning both put old (low C14) carbon into the atmosphere. Volcanism and fossil fuel burning have the same effect of reducing C14 content of the atmosphere, while deforestation does not.

There is also another large source that is commonly neglected: Overfishing! This may well be as large as deforestation, or even larger, and it releases fresh (high C14) carbon. The fish that humans eat (and the whales as well) are not marine herbivores, but eat primarily herbivorous zooplankton. The blue whale, in particular, eats (or used to eat) huge quantities of krill, small shrimplike creatures. The destruction of fish and whales has permitted the overgrazing of the ocean by herbivorous zooplankton, resulting in the same effect as deforestation does on the land. The reasoning is clear and the results are undisputable.

SO, IT IS A FACT THAT CO2 IS INCREASING RAPIDLY AND THAT THE CAUSE IS DUE TO HUMAN ACTIVITY- END OF STORY, THIS IS NOT DEBATABLE. ANYONE THAT SAYS OTHERWISE IS EITHER LYING OR IGNORANT ON THE TOPIC.
True again. Now, however, you leave Science.

So, we know that CO2 is a greenhouse gas, thus it causes warming. It makes theoretical sense and is shown to be the case in ice core data (again supported by other data and other methods):
While CO2 is a greenhouse gas and tends to increase the temperature of the atmosphere, there is a large countervening tendency by particulates to reduce the temperature. The relative sizes of these effects is not known.

CO2 concentration IS positively correlated with temperature.
True again.

THUS GIVEN THIS FACT AND THE ABOVE, IT IS THEN A FACT THAT HUMANS ARE RESPONSIBLE FOR GLOBAL WARMING-PERIOD, END OF STORY!
False. It is a fact that human activity increases CO2 content. It is NOT a fact that this is a dominant effect, eclipsing the others that I mentioned previously. It is NOT a fact that the net effect of emissions, including particulates, is significant at all. That is a non-sequitur.

Anyone who still doesnt believe in global warming just demonstrates that they are ignorant, or too agenda driven to accept the facts.
I believe in global warming because of temperature data. I am by no means convinced that human activities are the primary, or even a significant cause of global warming. The big factors are still outside of human control, most significantly, changes in solar output.